4130 30CrMo SCM430 Alloy Structure Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 500000 m.t./month
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Specification
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Thickness:
13-300mm
Length:
6-12m
Net Weight:
2mt
4130 30CrMo SCM430 Alloy Structure Steel Round Bar
Product Description of 4130 30CrMo SCM430 Alloy Structure Steel Round Bar
1. Steel grade: ASTM4140, SCM440, 42CrMo, DIN1.7225
2. Length: 6M-12M
3. Diameter: 16mm-300mm
4. Product range: round bar, flat bar, square bar
5. Technique: Hot rolled, forged, cold drawn
Specification of 4130 30CrMo SCM430 Alloy Structure Steel Round Bar
Material | SCM4140 | Round bar | Dia(mm) | 16-300mm |
Process | EAF + LF + VD + Forged + Heat Treatment (optional) | Length (mm) | Max 12m | |
Heat treatment | Normalized / Annealed / Quenched / tempered | Flat bar | Thickness(mm) | 8-500mm |
Delivery condition | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) | Width(mm) | 70-200mm | |
Test | Ultrasonic test according to SEP 1921-84 D/d | Length (mm) | Max 12m |
Chemical Composition of 4130 30CrMo SCM430 Alloy Structure Steel Round Bar
C | Si | Mn | Cr | Mo | P | S |
0.38~0.43 | 0.15~0.35 | 0.75~1.00 | 0.8~1.1 | 0.15~0.25 | ≤0.035 | <0.04< td=""> |
Photo Show of 4130 30CrMo SCM430 Alloy Structure Steel Round Bar
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of 4130 30CrMo SCM430 Alloy Structure Steel Round Bar
1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Company Information
CNBM International Corporation is the most important trading platform of CNBM group.
Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.
F A Q
1, Your advantages?
professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale
2, Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3, Factory or Trading Company?
CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.
4, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
5, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.
For any problem, please kindly contact us at any your convenient time.
We'll reply you in our first priority within 24 hours.
- Q: What is the difference between a solid steel round bar and a hollow steel round bar?
- A solid steel round bar is a cylindrical metal rod that has a uniform diameter throughout its entire length. It is made of solid steel, meaning it does not have any hollow or empty space inside. On the other hand, a hollow steel round bar also has a cylindrical shape but contains a hollow or empty space within its center. This hollow space can vary in size, depending on the specific design and purpose of the hollow round bar. The main difference between the two lies in their structural integrity and weight-bearing capacity. A solid steel round bar offers greater strength and stability compared to a hollow steel round bar. This is because the solid bar is made of a continuous steel material, making it more resistant to bending, twisting, or deforming under pressure. It is commonly used in applications where high strength and durability are required, such as construction, engineering, and manufacturing industries. In contrast, a hollow steel round bar may have reduced strength and load-bearing capacity due to the presence of the hollow space within. However, the hollow design provides certain advantages in terms of weight, cost, and flexibility. The hollow space allows for a lighter overall weight of the bar, making it more suitable for applications where weight is a critical factor, such as aerospace or automotive industries. Additionally, the hollow space can be utilized for various purposes, such as passing through electrical wires or fluids, providing a channel for ventilation, or even reducing material costs by using less steel. Ultimately, the choice between a solid steel round bar and a hollow steel round bar depends on the specific requirements of the application. If strength and stability are paramount, a solid bar would be the preferred choice. Conversely, if weight reduction, cost-efficiency, or additional functionality is desired, a hollow bar may be more suitable.
- Q: What is the difference between a seamless and a precision ground steel round bar?
- A solid cylindrical steel billet is heated and pierced to create a hollow tube-like structure, resulting in a seamless steel round bar. This manufacturing method guarantees a uniform outer diameter throughout the entire length of the bar, making it ideal for applications that necessitate a smooth surface finish and high dimensional accuracy. Industries such as oil and gas, automotive, and aerospace commonly employ seamless round bars. On the contrary, a precision ground steel round bar is produced by subjecting a hot-rolled or cold-drawn steel bar to precise grinding processes. These processes eliminate any surface imperfections, achieve meticulous dimensional tolerances, and provide a polished and smooth finish. Precision ground round bars are typically utilized in applications that require strict tolerances, superior surface finish, and consistent dimensions, such as in the production of machinery parts, tools, and components. In conclusion, the primary distinction between a seamless and a precision ground steel round bar lies in the manufacturing process and the resulting characteristics. Seamless round bars are formed from a hollow tube-like structure, ensuring a consistent outer diameter, whereas precision ground round bars are created by grinding a solid steel bar to achieve tight tolerances and exceptional surface finish. Both types of round bars offer their own advantages and find application in various industries based on specific requirements.
- Q: What is the difference between a centerless ground and a cold finished steel round bar?
- A centerless ground steel round bar is produced by grinding the surface of the bar to achieve a precise diameter and smooth finish, while a cold finished steel round bar is produced by cold drawing the bar through a die to achieve the desired shape and size without any additional surface treatment. The centerless ground bar has tighter tolerances and a smoother surface, making it suitable for applications that require high precision and a polished appearance. On the other hand, the cold finished bar may have slightly looser tolerances and a rougher surface, but it is more cost-effective and suitable for applications that do not require extreme precision or a polished finish.
- Q: Can steel round bars be used for making agricultural equipment?
- Agricultural equipment can indeed be made using steel round bars. These bars are well-known for their exceptional strength and durability, which makes them ideal for heavy-duty applications in the agricultural industry. When it comes to manufacturing various types of agricultural equipment like plows, tillers, cultivators, harrows, and seeders, steel round bars are the go-to choice. Their strength enables these tools to endure the tough conditions found in the field, even when faced with rocks and hard soil. Moreover, steel round bars can be easily shaped and welded, providing flexibility in the design and customization of agricultural equipment to meet specific requirements. All in all, steel round bars are a dependable and cost-efficient material option for creating agricultural equipment due to their strength, durability, and versatility.
- Q: Can steel round bars be threaded?
- Yes, steel round bars can be threaded. Threading refers to the process of cutting threads onto the surface of a cylindrical object, such as a steel round bar, to create a screw-like shape. This allows the bar to be securely fastened into a corresponding threaded hole or to join with another threaded component. Threading can be done using different methods, such as manual threading with a die or using machine tools like lathes or thread rolling machines. The specific method used depends on the size and type of thread required. However, it is important to note that not all steel round bars are suitable for threading, as the material composition and hardness of the steel can affect the threading process. Therefore, it is recommended to consult with a professional or experienced personnel to ensure the steel round bar is suitable for threading and to determine the appropriate threading method.
- Q: Can steel round bars be heat treated to enhance their properties?
- Yes, steel round bars can be heat treated to enhance their properties. Heat treatment processes such as quenching, tempering, and annealing can be applied to steel round bars to increase their hardness, strength, and toughness. These treatments can also improve other properties like wear resistance and machinability, making the steel bars more suitable for specific applications.
- Q: What is the difference between a bright and a precision ground steel round bar?
- A bright steel round bar and a precision ground steel round bar differ in terms of their surface finish and manufacturing tolerances. The bright steel round bar, also referred to as a bright mild steel bar or a bright mild steel round bar, undergoes a process known as bright drawing. This involves pulling the steel bar through a die to achieve a smooth and shiny surface finish. Consequently, bright steel round bars have a highly polished look and a clean, smooth texture. They are commonly used in decorative applications, such as the production of furniture, automotive accessories, and architectural elements. In contrast, a precision ground steel round bar is manufactured with strict dimensional tolerances and precise surface finishes. These bars are typically produced through the process of precision grinding, where the steel bar is machined to obtain a specific diameter and surface finish. Precision ground steel round bars are renowned for their accuracy and consistency in size, making them suitable for applications that require close tolerances and high precision, such as in the manufacturing of bearings, shafts, and hydraulic cylinders. In conclusion, the primary distinction between a bright steel round bar and a precision ground steel round bar lies in their surface finish and manufacturing tolerances. A bright steel bar boasts a polished appearance and is primarily used for decorative purposes, whereas a precision ground steel bar is machined to precise dimensions and is well-suited for applications that demand high precision and close tolerances.
- Q: What are the different grades of steel used for round bars?
- Round bars are commonly made from different grades of steel, each with its own composition and properties. These grades are suitable for various applications. Some widely used grades for round bars include: 1. Mild Steel (Low Carbon Steel): This is the most commonly used and basic grade of steel. It has a low carbon content, making it inexpensive and easy to work with. Mild steel round bars find applications in construction, automotive, and general engineering. 2. Carbon Steel: With higher carbon levels than mild steel, carbon steel offers improved strength and hardness. Round bars made from carbon steel are often used in high-stress applications like structural components, axles, and shafts. 3. Alloy Steel: By adding elements like chromium, nickel, or molybdenum to the base steel, alloy steel round bars enhance strength, toughness, and resistance to corrosion. They are commonly used in aerospace, automotive, and machinery industries. 4. Stainless Steel: Known for its corrosion resistance due to high chromium content, stainless steel round bars offer excellent strength, durability, and resistance to rust and staining. They are widely utilized in the food industry, marine applications, and architectural components. 5. Tool Steel: Designed specifically for high hardness, wear resistance, and heat resistance, tool steel round bars are commonly used in the manufacturing of cutting tools, dies, and molds. These examples demonstrate the variety of steel grades suitable for round bars. Each grade possesses unique properties, making them ideal for diverse applications across different industries.
- Q: What is the maximum aluminum content allowed for steel round bars?
- The maximum aluminum content allowed for steel round bars typically varies depending on the specific industry standards and specifications. However, a common maximum aluminum content limit for steel round bars is around 0.20-0.35%.
- Q: What are the different types of steel alloy compositions used for round bars?
- Round bars are made from various steel alloy compositions, each with its own unique properties and applications. Some commonly used compositions include carbon steel, alloy steel, stainless steel, tool steel, duplex steel, and high-speed steel. Carbon steel is the basic and widely used type, consisting primarily of iron and carbon. It is known for its strength, durability, and affordability. Alloy steel, on the other hand, contains additional alloying elements like manganese, chromium, nickel, or molybdenum. This gives it enhanced strength, hardness, and resistance to wear, making it suitable for high-performance applications. Stainless steel, composed mainly of iron, chromium, and nickel, offers excellent corrosion resistance. It is ideal for environments with high moisture or chemical exposure, and it is often used in architectural and decorative applications. Tool steel is designed for exceptional hardness, toughness, and wear resistance. It is commonly used in the production of cutting tools, dies, and molds. Elements like tungsten, vanadium, or cobalt are added to enhance its performance. Duplex steel is a balanced combination of austenitic and ferritic microstructures. It provides excellent strength and corrosion resistance, making it suitable for demanding environments like the offshore oil and gas industry. High-speed steel is engineered to withstand high temperatures and maintain hardness and toughness at elevated speeds. It is frequently used in the production of cutting tools, drills, and milling cutters. Compositions containing elements like tungsten, molybdenum, or cobalt are typically used. These examples represent just a few of the steel alloy compositions available for round bars. The choice of composition depends on the specific application, desired properties, and performance requirements.
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4130 30CrMo SCM430 Alloy Structure Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 500000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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